Transvaal 1871 Otto 3d Unissued Essay No Dot on Eagle's Leg

1871 Otto, Second Eagle, 3d pale reddish lilac, thin paper, but imperf. THE UNISSUED ESSAY WITHOUT DOT ON EAGLE'S LEG (as SG 24). VF/M example, large part OG. A rare stamp. Opinion: Eichele BPB (Essay, Plate L, 1st Essay, Rare). (cv£550). See clickable image of certificate below.